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List overview
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thread

Xor

Niels M�ller () @ Pike (-) developers forum
6 Feb 2003 6 Feb '03
2:25 p.m.

To me it would make sense to have multisets like "a occurs once, b occurs five times, c zero times, all other +infinity times". You could construct that as

m = ~(<a,b,c>) + (<a, b, b, b, b, b>)

m is an inverted multiset (ie. the default value is +infinity, not zero), but it has elements of multiplicity 0, 1, 5 and +infinity. So you need something similar to a multiset to implement it.

/ Niels Möller ()

Previous text:

...

2003-02-06 14:17: Subject: Xor


Then you treat it like a set, the easy way. :)

I guess doing it any other way would need multisets to store the values rather then repeating the elements.

/ Mirar

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